[Public-List] Public-List Digest, Vol 4511, Issue 1

[Mike Meinhold]

I found that the Beta 16 was a very close match to the Atomic 4 in terms
 of prop RPM and delivered power at the max practical horse power.  This is
borne out by my experience with the Beta 16 and my original 13x7 2- blade

Mike
Rinn Duin #272

On Wed, Jun 19, 2024 at 19:23 John Johnston via Public-List <
public-list at lists.alberg30.org> wrote:

> Thanks George
> Sent from my iPad
>
> > On Jun 19, 2024, at 6:10 PM, George Dinwiddie via Public-List <
> public-list at lists.alberg30.org> wrote:
> >
> > On 6/19/24 5:07 PM, John Johnston via Public-List wrote:
> >> Isn’t the two blade prop based on being driven by an Atomic 4, or
> similar engine that has no gear reduction and therefore spins much faster?
> >
> > The two-blades is to reduce drag while sailing, especially if you line
> up the prop with the keel.
> >
> > The 7" pitch is for the faster turning prop shaft. For a diesel, you
> probably want a 10" pitch or so.
> >
> > - George
> >
> > --
> > ----------------------------------------------------------------------
> >  When I remember bygone days                         George Dinwiddie
> >  I think how evening follows morn;            gdinwiddie at alberg30.org
> >  So many I loved were not yet dead,           http://www.Alberg30.org
> >  So many I love were not yet born.                          also see:
> >               'The Middle' by Ogden Nash     http://idiacomputing.com
> > ----------------------------------------------------------------------
> >
> >
> >
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